// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV }) // 使用当前云环境
const db = cloud.database()

// 云函数入口函数
exports.main = async (event, context) => {
  return await db.collection("coffeeStyle").aggregate()
  .lookup({
    from: 'coffeelist',
    localField: '_id',
    foreignField: 'group',
    as: 'coffeeList',
  }).end()
}